California volcano observatory is topic of USGS public lecture on July 28

Margaret T. Mangan, who is the scientist-in-charge of the USGS California Volcano Observatory, will talk about volcanic eruptions in the state and “watch list” volcanoes on July 28 at 7:00 pm. The free public lecture will take place in Rambo Auditorium/Bldg. 3, 345 Middlefield Road in Menlo Park.